Azure Devops features, user stories test cases and bugs.

Hey all, 

I have a problem with my project management.

 In Board --> Queries I can see User Stories under Features and features under Epics in addition I want to see Test Cases under User stories and Bugs under Test cases.

in conclusion I want to see full tree with all my items, in emphasis on Test cases and Bugs.

I hope you can help me, thanks for you time.